Free RF Testing

Included with every MRI annual Door Service contract. Keep your shield at optimal performance.

RF Testing
Door Services

RF Testing

MRI equipment utilizes a strong magnetic field to generate images. To obtain the optimal performance the equipment needs minimal RF noise in the surrounding environment. The RF noise is frequencies of radio and magnetic waves which are measured in Decibel (dB) units. The critical frequency range for most MRI equipment is from 50 MHz to 150 MHz. To determine the Shielding Effectiveness (SE) a series of test are performed at different locations throughout the enclosure. These tests utilize specialized equipment to transmit and receive RF noise at a specified frequency in accordance to set of standards specified by the equipment vendor.


RF Enclosure Integrity Chart

  1. Enclosure is at optimum performance
  2. Enclosure is at decent performance
  3. Enclosure is substandard (Door should be evaluated for maintenance)
  4. Enclosure is compromised (Should investigate for RF leaks)
  5. Enclosure is severely compromised (Should investigate for RF leaks, possible shield replacement)
Field Strength Operating Frequency (MHz) Wavelength (M)
0.3T 12.8 23.42
0.5T 21.3 14.07
1.0T 42.6 7.03
1.5T 63.9 4.69
3.0T 127.8 2.34
7.0T 298.2 1.00
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